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Diffstat (limited to 'luatexbase-modutils.dtx')
| -rw-r--r-- | luatexbase-modutils.dtx | 81 |
1 files changed, 70 insertions, 11 deletions
diff --git a/luatexbase-modutils.dtx b/luatexbase-modutils.dtx index 4a08c4c..14aa8a6 100644 --- a/luatexbase-modutils.dtx +++ b/luatexbase-modutils.dtx @@ -118,27 +118,86 @@ See source file '\inFileName' for details. % \title{The \pk{luatexbase-modutils} package} % \date{v0.1 2010-03-27} % \author{% -% Manuel P\'egouri\'e-Gonnard \\ \texttt{mpg@elzevir.fr} \and -% \'Elie Roux \\ \texttt{elie.roux@telecom-bretagne.eu}} +% Manuel P\'egouri\'e-Gonnard \\ \email{mpg@elzevir.fr} \and +% \'Elie Roux \\ \email{elie.roux@telecom-bretagne.eu}} % % \maketitle % % \begin{abstract} +% This package provides functions similar to \latex's |\usepackage| and +% |\ProvidesPackage| macros,\footnote{and their variants or synonyms such as +% |\documentclass| and |\RequirePackage| or |\ProvidesClass| and +% |\ProvidesFiles|} or more precisely the part of these macros that deals with +% identification and version checking (no attempt is done at implementing an +% option mechanism). Functions for error reporting are provided too. +% +% It also loads \pf{luatexbase-loader}. % \end{abstract} % % \tableofcontents % % \section{Documentation} % -% Lua has some embedded module management, with the functions \texttt{module} -% and \texttt{require}. With this package we try get more control on the -% module system, by implementing something close to the \LaTeX 's -% \texttt{\string\usepackage} and \texttt{\string\RequirePackage} macros: the -% \texttt{\string\luatexUseModule} and \texttt{\string\luatexRequireModule} -% that act like them, but for lua files. The functions \texttt{module} and -% \texttt{require} should not be used, in profit of the lua functions -% \texttt{luatexbase.provides\_module} and \texttt{luatexbase.use\_module} or -% \texttt{luatexbase.require\_module}. +% Lua's standard function |require()| is similar to \tex's |\input| primitive +% but is somehow more evolved in that it makes a few checks to avoid loading +% the same module twice. In the \tex world, this needs to be taken care of by +% macro packages; in the \latex world this is done by |\usepackage|. +% +% But |\usepackage| also takes care of many other things. Most notably, it +% implements a complex option system, and does some identification and version +% checking. The present package doesn't try to provide anything for options, +% but implements a system for identification and version checking similar to +% \latex's system. Both \tex macros and Lua functions are provided. +% +% This package also provides Lua functions for reporting errors, warnings, +% etc. +% +% It is important to notice that Lua's standard function |module()| is +% completely unrelated to the present package. It has nothing to do with +% identification and deals only with namespaces.\footnote{More precisely, it +% modifies the current environment.} So, you should continue to +% use it normally, unlike the |require()| function which can be replaced with +% this package's |luatexbase.require_module()|. +% +% \subsection{\tex macros} +% +% The two macros |\luatexUseModule| and |\luatexRequireModule| are very +% similar and are interfaces to the Lua functions |use_module| and +% |require_module|. The only difference between those macros is the number of +% arguments (just as the underlying Lua functions): |\luatexUseModule| only +% take one argument: the module name\footnote{without extension} while +% |\luatexRequireModule| takes another argument for specifying a minimal +% version (see below). With \latex, this argument is the first and is +% optional. Otherwise, it's the second one and it's mandatory. +% +% \subsection{Lua functions} +% +% The main functions are |luatexbase.require_module| and +% |luatexbase.use_module| which may be used as a replacement to |require()|. +% The only difference between these functions is, |require_module| accepts a +% second, optional argument in order to specify a minimal version. They do the +% same as |require()| but also make sure the module loaded correctly +% identifies itself with the name given, and its version is greater than the +% minimal version required. The version can be given either as a (floating +% point) number or as a date in YYYY/MM/DD format. +% +% Modules identify themselves using |luatexbase.provides_module|, whose only +% argument is a table with some information about the module. The mandatory +% fields are |name| (a string), |version| (a number), |date| (a string) and +% |description| (a string). Other fields are optional and ignored, and usually +% include |copyright|, |author| and |license|. +% +% \bigskip +% +% Functions for reporting are provided; similarly to \latex's |\PackageError| +% etc. they take the module name as their first argument and include it in the +% printed message in an appropriate way. The remaining arguments are passed to +% |string.format()| before being printed. +% +% The function provided (all found in the |luatexbase| table) are +% |module_error, |module_warning|, |module_info| (writes to terminal and log), +% |module_log| (writes only to the log file) and |module_term| (writes only to +% the terminal). % % \section{Implementation} % |